Each sub-matrix transform to a column vector.
Remove all the consonants
Rotate input square matrix 90 degrees CCW without rot90
Count up then down
GJam 2014 China Rd A: Read Phone Number
GJam: 2013 Rd1a Bullseye Painting - Large Numbers
GJam 2014 China Rd B: Party
GJam 2014 China Rd A: Rational Number Tree (Large Values)
Minimum Distance between two N-sided Polygons
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